It appears to be surprise release date for WiiWare today. Joining GameLoft's Brain Challenge on the service today is Hudson's Tetris Party. The downloadable version of the original falling blocks puzzler is available for 1,200 WiiPoints.

Tetris Party offers Tetris through 17 modes of play. Multiplayer support through Wi-Fi connection is included, allowing six players to face off in online matches. The game also includes Balance Wii Board support, where you control blocks via the Wii Fit peripheral.

While the Japanese version has been released first, Tetris Party is also due for release overseas later this year through Tetris Online, Inc.